Home / 419,618.12-579,079.64-228,631.44

Finding the Fourth Proportional to 419,618.12, 579,079.64 and 228,631.44

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Solution

The fourth proportional to 419,618.12, 579,079.64 and 228,631.44 is: 315,515.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,618.12 : 579,079.64 = 228,631.44 : x
  2. Step 2: Convert to fraction form
    419,618.12/579,079.64 = 228,631.44/x
  3. Step 3: Cross multiply
    419,618.12x = 579,079.64 × 228,631.44
  4. Step 4: Simplify right side
    419,618.12x = 132,395,811,967.88
  5. Step 5: Solve for x
    x = 132,395,811,967.88/419,618.12
  6. Step 6: Final answer
    x = 315,515.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.